Extraordinary Summer

As the youngest member of the family, Sam started his secret "loneliness training" on the holiday island because he was afraid of the loneliness after his family left. And Tess, an eccentric girl on the island, racks her brains to meet her biological father whom she has never met. Sam didn't expect that this exciting summer vacation would not only disrupt his training schedule to adapt to loneliness, but would also lead him into another adventure. During this long summer vacation, the two stayed together and harvested the best memories. Sam also realized that life is not an isolated island, and companionship itself is meaning.